Electric toothbrush



FIG. 1 is a perspective view of an electric toothbrush showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof; and,

FIG. 6 is a top plan view thereof.

The broken lines showing bristles and an area on the rear of the head are included to illustrate portions of the toothbrush that form no part of the claimed design. 

The ornamental design for an electric toothbrush, as shown and described. 